STIHL BG 75 Owner's manual

Brand: STIHL

Model: BG 75

Category: Air blowers/dryers

Type: Owner's manual

This manual is also suitable for

BG75

STIHL BG 75 is a powerful handheld blower with a variety of features to make yard work easier. Its lightweight design and ergonomic handle provide comfortable operation, while the adjustable nozzle allows you to direct airflow precisely. The BG 75 is ideal for clearing leaves, grass clippings, and other debris from sidewalks, driveways, and patios. It can also be used to clean gutters, remove snow from walkways, and even dry off cars. With its powerful engine and efficient design, the STIHL BG 75 is a versatile tool that can tackle a wide range of outdoor cleaning tasks.

STIHL BG 75

III

Instruction Manual

Owner's Manual

Assembling

Safety Precautions

Operating Instructions

Maintenance

Parts and Controls 2

Definitions 3

Safety Precautions 4

Assembling the Blower 10

Fuel Mix 11

Fueling 11

Starting 12

Using the blower 14

Cleaning the Air Filter 16

Adjusting the Carburetor 16

Motormanagement 16

Spark Arresting Screen in Muffler 17

Checking the Spark Plug 18

Replacing the Starter Rope

and Rewind Spring 19

Operating Instructions 21

Maintenance Chart 22

Specifications 23

Special Accessories 23

Storing the Machine 23

STIHL Incorporated Federal and

California Emission Control

Warranty Statement 24

This Manual contains operating and

safety instructions for all STIHL BG 75

blowers.

Pay special attention to the safety

precautions outlined on pages 4 to 9.

Allow only persons who understand this

Manual to operate your blower.

To receive maximum performance and

satisfaction from your STIHL blower, it is

important that you read and understand

the maintenance and safety precautions

before using your blower.

Contact your STIHL dealer or the STIHL

distributor for your area if you do not

understand any of the instructions in this

Manual.

:DUQLQJ

Because a blower is a high-speed tool,

some special safety precautions must

be observed as with any other power

tool to reduce the risk of personal injury.

Careless or improper use may cause

serious or even fatal injury.

STIHL’s philosophy is to continually

improve all of its products. As a result,

engineering changes and improvements

are made from time-to-time.

If the operating characteristics or the

appearance of your blower differ from

those described in this Manual,

please contact your STIHL dealer for

information and assistance.

&RQWHQWV

0458 326 3021. M10. E9. T. Printed in Germany

 1999 Andreas Stihl AG & Co., Waiblingen

Printed on chlorine-free paper

Printing inks contain vegetable oils,

paper is recyclable

%* 

1 = Slide control

2 = Handle

3 = Throttle trigger

4 = Intake screen

5 = Clamp

6 = Blower tube

7 = Nozzle

8 = Spark plug boot

9 = Fuel pump

10 =Choke lever

11 =Filter housing

12 = Carburetor adjusting screws

13 =Starter grip

14 = Fuel filler cap

15 = Fuel tank

16 = Muffler

3DUWVDQG&RQWUROV

326BA038 KN

 %*

 6OLGH&RQWURO

Start, run and stop switch.

 +DQGOH

The handle of the blower held by the

right hand.

 7KURWWOH7ULJJHU

Controls the speed of the engine.

 ,QWDNH6FUHHQ

Reduces the risk of direct contact

with the fan.

 &ODPS

Secures blower tube to machine.

 %ORZHU7XEH

Directs airstream.

 1R]]OH

Aims and widens the airstream

 6SDUN3OXJ%RRW

Connects the spark plug to the

ignition wire.

 )XHO3XPS

Provides additional fuel feed for a

cold start.

 &KRNH/HYHU

Eases engine starting by enriching

mixture.

 )LOWHU+RXVLQJ

Covers the air filter element.

 &DUEXUHWRU$GMXVWLQJ6FUHZV

For tuning carburetor

 6WDUWHU*ULS

The grip of the pull starter, which is

the device to start the engine.

 )XHO)LOOHU&DS

For closing the fuel tank.

 )XHO7DQN

For fuel and oil mixture.

 0XIIOHU

Attenuates exhaust noises and

diverts exhaust gases away from

operator.

'HILQLWLRQV

%* 

:DUQLQJ

7KHXVHRIDQ\EORZHU

PD\EHGDQJHURXV,WLV

LPSRUWDQWWKDW\RXUHDG

IXOO\XQGHUVWDQGDQG

REVHUYHWKHIROORZLQJVDIHW\SUH

FDXWLRQV



:DUQLQJ

5HUHDGWKHRZQHUµV

PDQXDODQGWKHVDIHW\

LQVWUXFWLRQVSHUL

RGLFDOO\



:DUQLQJ

Careless or improper use of the machine

may cause serious injury. Have your

STIHL Dealer show you how to operate

your blower. Observe all applicable

local safety regulations, standards and

ordinances.



:DUQLQJ

Minors should never be allowed to use a

blower : Bystanders, especially children,

and animals should not be allowed in the

area where a machine is in use.

Never let the unit run unattended.

Do not lend or rent your machine without

the owner‘s manual. Be sure that any-

one using your unit understands the

information contained in this manual.

Most of these safety precautions and

warnings apply to the use of all STIHL

blowers. Different models may have

different parts and controls.

See the appropriate section of your

owner‘s manual for a description of the

controls and function of the parts of your

machine.

6DIHXVHRIDEORZHULQYROYHV

1. the operator

2. the blower

3. the use of the blower .

7+(23(5$725

3K\VLFDO&RQGLWLRQ

You must be in good physical condition

and mental health and not under the

influence of any substance (drugs,

alcohol, etc.) which might impair vision,

dexterity or judgment. Do not operate a

blower when you are fatigued .

Be alert - if you get tired while operating

your machine, take a break. Tiredness

may result in loss of control. Working

with any blower can be strenuous. If you

have any condition that might be aggra-

vated by strenuous work, check with your

doctor before operating the machine.



:DUQLQJ

Prolonged use of a blower, (or other

machines) exposing the operator to

vibrations may produce whitefinger

disease (Raynaud‘s phenomenon)or

carpal tunnel syndrome. These condi-

tions reduce the hand‘s ability to feel

and regulate temperature, produce

numbness and burning sensations and

may cause nerve and circulation

damage and tissue necrosis.



:DUQLQJ

The STIHL blower is not equipped with

an antivibration (AV) system. Other

STIHL blower models are available with

an AV system designed to reduce the

transmission of engine vibrations to the

operator’s hands. An AV system is

recommended for those operators who

use blowers on a regular or sustained

basis.

Antivibration systems do not guarantee

that you will not sustain whitefinger

disease or carpal tunnel syndrome.

Therefore, continual and regular users

should monitor closely the condition of

their hands and fingers. If any of the

above symptoms appear, seek medical

advice immediately.

3URSHU&ORWKLQJ

Clothing must be sturdy and snug-fitting,

but allow complete freedom of move-

ment.



:DUQLQJ

Avoid loose-fitting jackets, flared or

cuffed pants, scarfs, unconfined long

hair or anything that could be drawn into

the air intake.

Wear overalls or long

pants to protect your legs.

Do not wear shorts.

6DIHW\3UHFDXWLRQV



Use of gloves when

working with the blower is

recommended.

Good footing is most

important. Wear sturdy

shoes with nonslip soles.



:DUQLQJ

To reduce the risk of injury associated

with the inhalation of dust, use a face

filter mask when using your blower in

dusty conditions.



:DUQLQJ

Proper eye protection is a must. Even

though the discharge is directed away

from the operator, ricochets and bounce

backs can occur during blower

operations.

Never operate a blower

unless wearing goggles

or properly fitted safety

glasses with adequate

top and side protection

which comply with ANSI Z 87.1 (or your

applicable national standard).



:DUQLQJ

Blower noise may damage your hearing.

Wear sound barriers (ear plugs or ear

mufflers) to protect your hearing. Conti-

nual and regular users should have their

hearing checked regulary.

7+(%/2:(5

For illustrations and definitions of the

blower parts see the chapter on "Parts

and Controls"!



:DUQLQJ

Never modify a blower in any way. Only

attachments supplied by STIHL or

expressly approved by STIHL for use

with the specific STIHL blower models

are authorized. Although certain

unauthorized attachment are useable for

the STIHL blower, their use may be

extremely dangerous.

7+(86(2)7+(%/2:(5

7UDQVSRUW

Always turn off the engine before putting

down blower. When transporting your

unit in a vehicle, properly secure it to

prevent turnover, fuel spillage and

damage to the machine.

)XHOLQJ

This STIHL unit uses an oil-gasoline

mixture for fuel (see the chapter on

"Fuel" of your owner‘s manual).



:DUQLQJ

Gasoline is an extremely

flammable fuel. If spilled

or ignited by a spark or

other ignition source, it

can cause fire and

serious burn injury or property damage.

Use extreme caution when handling

gasoline or fuel mix.

Do not smoke or bring any fire or flame

near the fuel.

)XHOLQJLQVWUXFWLRQV

Fuel your machine in well-ventilated

areas, outdoors only. Always shut off the

engine and allow it to cool before refuel-

ing. Relieve fuel tank pressure by loosen-

ing fuel cap slowly. Never remove fuel

filler cap while engine is running.

Select bare ground for fueling and move

at least 10 feet (3 m) from the fueling

spot before starting the engine.

Wipe off any spilled fuel before starting

your blower and check for leakage.

Always tighten fuel filler cap securely

after fueling.



:DUQLQJ

Check for fuel leakage while refueling

and during operation. If fuel or oil

leakage is found, do not start or run the

engine until leak is fixed and spilled fuel

has been wiped away. Take care not to

get fuel on your clothing. If this happens,

change your clothing immediately.

Always store gasoline in approved

container.





:DUQLQJ

Unit vibrations can cause an improperly

tightened fuel cap to loosen or come off

and spill quantities of fuel.

In order to reduce risk of

fuel spillage and fire,

tighten fuel cap by hand

with as much force as

possible.

6WDUWLQJ

You should always inspect your unit

before starting it. Make sure the controls

and safety devices are working properly.



:DUQLQJ

Your blower is a one-person machine.

To reduce the risk of eye or other injury

from thrown objects, insure that by-

standers are at least 50 feet (15m) away

during use.

Stop the engine immediately if you are

approached.

For specific starting instructions, see the

appropriate section of your owner‘s

manual. Place the machine on firm

ground or other solid surface in an open

area. Maintain good balance and secure

footing.



:DUQLQJ

When you pull the starter grip, don‘t

wrap the starter rope around your hand.

Do not allow the grip to snap back, but

guide the starter rope slowly back to

permit the rope to rewind properly.

Failure to follow this procedure may

result in injury to hand or fingers and

may damage the starter mechanism.

:RUNLQJLQVWUXFWLRQVDQGLPSRUWDQW

DGMXVWPHQWV



:DUQLQJ

Never operate your machine if it is

damaged, improperly adjusted or not

completely and securely assembled.



:DUQLQJ

Start and operate your unit outdoors in a

ventilated area.

Keep the space behind and beside the

engine clear at all times to allow for the

escape of hot and toxic exhaust fumes.

When working with a handheld blower,

always carry it with the muffler away

from you to reduce the risk of burns from

contact with the hot muffler or hot

exhaust fumes.

Operate your machine under good

visibility and daylight conditions only.

Work carefully.

:RUNLQJ&RQGLWLRQV

Operate the blower under good visibility

and daylight conditions only.



:DUQLQJ

Your blower produces

poisonous exhaust fumes

as soon as the combus-

tible engine is running.

These gases (e.g. carbon

monoxide) may be color-

less and odorless.

To reduce the risk of serious or fatal

injury from breathing toxic fumes, never

run the blower indoors or in poorly

ventilated locations. Ensure proper

ventilation when working in trenches or

other confined areas.



:DUQLQJ

Use of this product can generate dust,

mists, and fumes containing chemicals

known to cause respiratory disease,

cancer, birth defects, or other reproduc-

tive harm. If you are unfamiliar with the

risks associated with the particular dust,

mists or fumes at issue, consult your

employer, governmental agencies such

as OSHA and NIOSH and other sources

on hazardous materials. If the substance

being blown or vacuumed is a commer-

cial substance, review the material

safety data sheet for that substance and

/ or consult the material manufacturer /

supplier. The state of California and

some other authorities, for instance,



have published lists of substances

known to cause cancer, reproductive

toxicity, etc.

Control dust, mist and fumes at the

source where possible. In this regard

use good work practices and follow the

recommendations of OSHA / NIOSH

and occupational and trade associa-

tions. When the inhalation of toxic dust,

mists and fumes cannot be eliminated,

the operator and any bystanders should

always wear a respirator approved by

NIOSH / MSHA for the substance at

issue.



:DUQLQJ

Dust with silica in its composition may

contain crystalline silica. Silica is a basic

component of sand, quartz, brick, clay,

granite and numerous other minerals

and rocks, including masonry and con-

crete products. Repeated and / or sub-

stantial inhalation of airborne crystalline

silica can cause serious or fatal respira-

tory disease, including silicosis. In addi-

tion, the state of California and some

other authorities have listed respirable

crystalline silica as a substance known

to cause cancer. When encountering

such materials, always follow the re-

spiratory precautions mentioned above.



:DUQLQJ

Breathing asbestos dust is dangerous

and can cause severe or fatal injury, re-

spiratory illness or cancer. The use and

disposal of asbestos containing products

have been strictly regulated by OSHA

and the Environmental Protection

Agency. Do not blow or disturb asbestos

or asbestos containing products, such

as asbestos insulation. If you have any

reason to believe that you might be

disturbing asbestos, immediately contact

your employer or a local OSHA

representative.

When working with the blower, always

wrap your fingers tightly around the

handle, keeping the control handle

cradled between your thumb and

forefinger. Keep your hand in this

position to have your machine under

control at all times. Make sure your

control handle (and grip for vacuum

attachment) are in good condition and

free of moisture, pitch, oil or grease.



:DUQLQJ

To reduce the risk of personal injury, do

not direct air blast towards bystanders,

since the high pressure of the air flow

could injure eyes and could blow small

objects at great speed.



:DUQLQJ

Always shut off the engine before

cleaning or servicing the unit or

replacing parts.

The blower fan between the air intake

and output openings rotates whenever

the engine is running. In order to reduce

the risk of injury from contact with the

fan, never operate your unit without a

properly mounted intake screen and

blower tube. Never insert any foreign

object into the air intake or output

openings of the machine.

Pay attention to the direction of the wind,

i.e., do not work against the wind.

326BA000 LA



To reduce the risk of stumbling and loss

of control,do not walk backward while

operating the machine.

8VLQJWKH9DFXXP$WWDFKPHQW

(special accessory)

For specific assembling instructions, see

the appropriate section of your owner’s

manual.

When working with the vacuum attach-

ment (special accessory), always hold

the unit firmly with both hands.

Wear it with the carrying harness over

the shoulder (see illustration).



:DUQLQJ

To reduce the risk of perso-

nal injury from fire and ex-

plosion, never attempt to

pick up hot or burning sub-

stances (e.g. smoldering

ashes, glowing cigarettes)

or combustible fluids (e.g.

gasoline, paint thinners).



:DUQLQJ

In order to reduce the risk of injury from

contact with rotating parts and damage

to the motor, the intake screen must

always be screwed in place when the

suction tube is not mounted.

0$,17(1$1&(5(3$,5$1'

6725,1*

Use only identical STIHL replacement

parts for maintenance and repair.

Use of parts manufactured by others

may cause serious or fatal injury.

Follow the maintenance and repair

instructions in the appropriate section of

your owner’s manual. Refer to the

maintenance chart at the last pages of

this manual.



:DUQLQJ

Always stop the engine and make sure

that the fan is stopped before doing any

maintenance or repair work or cleaning

the blower. Do not attempt any mainten-

ance or repair work not described in

your owner’s manual. Have such work

performed at your STIHL service shop

only.

Check fuel filler cap for leaks at regular

intervals. Use the specified spark plug

and make sure it and the ignition lead

are always in good condition.

0DLQWHQDQFHUHSODFHPHQWRUUHSDLU

RIWKHHPLVVLRQFRQWUROGHYLFHVDQG

V\VWHPVPD\EHSHUIRUPHGE\DQ\

QRQURDGHQJLQHUHSDLUHVWDEOLVKPHQW

RULQGLYLGXDO+RZHYHULI\RXFODLP

ZDUUDQW\IRUDFRPSRQHQWZKLFKKDV

QRWEHHQVHUYLFHGRUPDLQWDLQHGSUR

SHUO\RULIQRQDSSURYHGUHSODFHPHQW

SDUWVZHUHXVHG67,+/PD\GHQ\

ZDUUDQW\

326BA002 L





:DUQLQJ

A worn or damaged muffler is a fire

hazard and may cause loss of hearing.

Check to see that the muffler is in good

condition. The blower must not be opera-

ted if the muffler is not functioning pro-

perly or has been removed.

Remember that the risk of forest fires is

greater in hot weather. Use the spark

arresting muffler supplied with the unit.

Never touch a hot muffler or burn will

result.



:DUQLQJ

In order to reduce the risk of fire, do not

modify or remove any part of the muffler

or spark arrestor.

Keep spark plug and wire connection

tight and clean. The spark plug electrode

gap should be checked with a feeler

gauge at least every 50 operating hours

and reset if necessary. Fit a new spark

plug if the electrodes are badly pitted.

Store blower in a dry, high or locked

location place and out of reach of

children.

Before storing for longer than a few

days, always empty the fuel tank.

For any maintenance please refer to the

maintenance chart DQGWRWKHZDUUDQW\

VWDWHPHQW near the end of this manual.



The BG 75 comes standard as a blower.

A vacuum attachment* is available for

user installation which can be used to

pick up leaves, grass and similar

materials.

%ORZHU

•

Line up the dots on the tube and

housing and then push the blower

tube  onto the housing stub .

•

Tighten down the clamp .

* Special accessory

3UHSDUDWLRQVIRUYDFXXPLQJ

Before using the vacuum attachment for

the first time:

•

Fit the elbow inside the catcher bag.

It is necessary to remove the blower

tube and fit the elbow with catcher bag

in its place.

•

Release the clamp.

•

Pull the blower tube off the fan hou-

sing stub.

9DFXXPDWWDFKPHQW

•

Remove the screws  from the

starter cover.

•

Mount the handle  - insert the

screws (M5x25) in the starter cover

and one screw  (P6x19) at the

underside of the unit and tighten

down.

•

Remove screw  from intake

screen  - fold the screen down.

•

Push suction tube 

over intake  on fan housing.

•

Fit the hose clamp  and tighten

it down.

•

Fit elbow of catcher bag  on the

fan housing stub .

•

Attach the carrying strap .

$VVHPEOLQJWKH%ORZHU

326BA035 KN

326BA036 KN

326BA037 KN

 %*

)XHO0L[

This engine is certified to operate on

unleaded gasoline and with the

mix ratio 50:1.

Your two-stroke engine requires a

mixture of brand-name gasoline and

quality two-stroke engine oil with the

classification TC.

Use regular branded unleaded gasoline

with a minimum octane rating of

90 RON (U.S.A./Canada: pump octane

min. 89!). If the octane number of the

regular grade gasoline in your area is

lower use premium unleaded fuel.

Fuel with a lower octane rating may

result in preignition (causing "pinging")

which is accompanied by an increase in

engine temperature. This, in turn,

increases the risk of the piston seizure

and damage to the engine.

The chemical composition of the fuel is

also important. Some fuel additives not

only detrimentally affect elastomers

(carburetor diaphragms, oil seals, fuel

lines etc.), but magnesium castings as

well. This could cause running problems

or even damage the engine. For this

reason it is essential that you use only

name branded fuels!

Use only STIHL two-stroke engine oil or

equivalent branded two-stroke air-

cooled engine oils with the classification

TC for mixing.

We recommend STIHL 50:1 two-stroke

engine oil since it is specially formulated

for use in STIHL engines.

Do not use BIA or TCW (two-stroke

water cooled) mix oils!

Take care when handling gasoline.

Avoid direct contact with the skin and

avoid inhaling fuel vapour.

The canister should be kept tightly

closed in order to avoid any moisture

getting into the mixture.

The fuel tank and the canister in which

fuel mix is stored should be cleaned

from time to time.

)XHOPL[DJHV

Only mix sufficient fuel for a few days

work, not to exceed 3 months of storage.

Store in approved safety fuel-canisters

only. When mixing, pour oil into the

canister first, and then add gasoline.

Gaso- Oil (STIHL 50:1 or

line equivalent branded TC oils)

US gal. US fl.oz

1 2.6

2 1/2 6.4

512.8

Dispose empty mixing-oil canisters only

at authorized disposal locations.

)XHOLQJ

Before fueling, clean the filler cap

and the area around it to ensure that no

dirt falls into the tank.

Always thoroughly shake the mixture in

the canister before fueling your machine.



:DUQLQJ

In order to reduce the risk of burns or

other personal injury from escaping gas

vapor and fumes, remove the fuel filler

cap carefully so as to allow any pressure

build-up in the tank to release slowly.



:DUQLQJ

After fueling, tighten fuel cap

as securely as possible by hand.

389BA031 KN

%* 

•

Observe safety precautions - see

chapter "Safety Precautions" in this

manual.

To start the engine, move the

slide control  to 

position.

Squeeze the throttle trigger  and

move the slide control to P

at the same time.

•

Let go of throttle trigger.

•

Release the slide control =

VWDUWLQJWKURWWOHSRVLWLRQ

Set the choke lever :

for cold start to J

for warm start to H

(even if engine has been

running but is still cold)

Press the fuel pump bulb 

at least five times.

Change the fuel pick up body every year.

Before storing your machine for a long

period, drain and clean the fuel tank and

run engine until carburetor is dry.

6WDUWLQJ

326BA010 LÄ

326BA011 L

389BA032 KN

 %*

•

Put the unit on the ground.

•

Make sure you have a firm footing:

Hold the unit with your left hand and

press it firmly against the ground.

•

Pull the starter grip slowly with your

right hand until you feel it engage -

and then give it a brisk strong pull.

Do not pull out starter rope more

than 30" (75 cm) - it might break.

Do not let the starter grip snap back.

•

Guide it back slowly so that starter

rope can rewind properly.

When engine begins to fire:

•

Move choke lever to H

and continue cranking.

$VVRRQDVHQJLQHUXQVblip the

throttle trigger, the slide

control then moves to the

"Run" position 

and the returns to idling speed.

•

To shut down the engine:

Move the slide control to .

$WYHU\ORZRXWVLGHWHPSHUDWXUHV

$OORZHQJLQHWRZDUPXS.

•

As soon as engine runs:

•

Blip the throttle trigger =

slide control moves to the

"Run" position 

engine returns to idling speed.

•

Open throttle slightly - warm up

engine for short period.

,IWKHHQJLQHGRHVQ¶WVWDUW

If you did not move the choke

lever to H

quickly enough after the engine

began to fire, the combustion

chamber hasflooded.

Remove spark plug terminal .

•

Unscrew and dry off the

spark plug.

•

Set slide control to "0".

•

Engage the throttle fully.

•

Pull the starter rope several

times to clear the combustion

chamber.

•

Refit the spark plug and connect

the spark plug terminal.

•

Set slide control to 

•

Set choke lever to H

even if engine is cold.

•

Now start the engine.

326BA012 L

326BA013 L

%* 

)XHOWDQNKDVEHHQUXQGU\

DQGZDVUHIXHOHG WKHQ

Press fuel pump bulb 

at least 5 times.

•

Now start the engine.

The blower is designed for single-

handed operation. The operator can grip

the handle on the housing in his right or

left hand.

A large area can be covered with the

wide nozzle.

The wide nozzle generates a flat air-

stream which can be used highly specifi-

cally and effectively since the outlet is

near ground level.

The blower’s wide nozzle is particularly

effective for clearing large areas covered

with sawdust, fallen leaves or cut

grass etc.

7KHPDFKLQHPXVWDOZD\VEHVZLW

FKHGRIIFRPSOHWHO\EHIRUHXQGHU

WDNLQJDQ\DOWHUDWLRQV (risk of injury

due to the circulating fan wheel).

7KHPDFKLQHPXVWDOZD\VEHPDGH

XSFRUUHFWO\

:DUQLQJ

Be wary of small animals when blow-

sweeping or vaccuming leaves. To avoid

possible injuries in such situations, do

not run the unit at high revs.

326BA014 L

8VLQJWKHEORZHU

326BA004 L

 %*

When using the blower as a vacuum

cleaner (vacuum attachment as special

accessory), the carrying strap on the

catcher bag is placed over the left

shoulder and the right arm is guided by

the carrying strap. The left hand grips

the handle on the housing, the right

hand gripping the carrying handle.

Large leaves, cardboard or pieces of

bark can be taken up by the suction

tube with its large diameter.

Never take up wet leaves as they may

clog the fan!

To minimize blowing time, use rakes

and brooms to loosen debris before

blowing.

Recommended working techniques to

minimize airborne debris and pollution:

•

In dusty conditions, slightly dampen

surfaces.

•

Use the full blower nozzle

extension so the air stream can

work close to the ground.

•

Do not direct debris at subjects

such as open windows or freshly-

washed cars.

•

After using blowers, clean up. Do

not blow debris onto neighbouring

properties.

Recommended working techniques to

minimize noise:

•

Operate power equipment only at

reasonable hours - not early in the

morning, late at night or during the

noon-break when people might be

disturbed. Comply with times listed

in local ordinances. Usual recom-

mendations are 9:00 a.m. to 12:00

a.m. and 03:00 p.m. to 5:00 p.m. on

workdays for professionals. Special

considerations should be given to

neighbours on weekends.

•

Fewer engines mean less noise;

therefore use only one piece of

power equipment at a time, when

possible.

•

Operate power blowers at the

lowest possible throttle speed to do

the job.

•

Check your equipment before

operation, especially the muffler, air

intakes and air filters.

Conserve water by using power blowers

instead of hoses for those lawn and

garden applications where a blower can

be properly used, such as cleaning

patios or porches.

326BA002 L

%* 

Dirty air filters reduce engine power,

increase fuel consumption and make

starting more difficult.

,IWKHUHLVDQRWLFHDEOHORVVRIHQJLQH

SRZHU

•

Move choke lever to J

Press in the tab .

Ease the filter cover 

over the tab and lift it off.

•

Clean away loose dirt from around

the filter.

•

Remove the foam  and felt 

filter elements.

•

Wash the foam element in a clean,

non-flammable cleaning solution

(e.g. warm soapy water) and then

dry.

•

Fit a new felt filter element. As a

temporary measure you can knock

it out on the palm of your hand or

blow it out with compressed air.

Don’t wash.

Always replace damaged filter elements.

•

Install the foam element  in the

filter cover

•

Place felt element  (lettering

facing inward) in filter housing .

•

Fit the felt cover  so that it snaps

into position.

The carburetor comes with a standard

setting.

This is the optimum setting to ensure

your machine will operate reliably

with the lowest possible emissions

under most operating conditions.

6WDQGDUGVHWWLQJ

If it is necessary to readjust the car-

buretor from scratch, first carry out the

standard setting.

Turn

+ high speed adjusting screw and

/ low speed adjusting screw counter-

clockwise (richer) as far as stop.

•

Check air filter and clean it if neces-

sary.

•

Warm up the engine.

•

Set idle speed correctly.

&OHDQLQJWKH$LU)LOWHU

326BA015 KN

355BA031 KN

355BA032 KN

0RWRU0DQDJHPHQW

Exhaust emissions are controlled by the

design of the fundamental engine

parameters and components

(e.g. carburetion, ignition, timing and

valve or port timing) without the addition

of any major hardware.

$GMXVWLQJWKH

&DUEXUHWRU

ZLWKWZRDGMXVWLQJVFUHZV

 %*

$GMXVWLQJLGOHVSHHG

(QJLQHVWRSVZKLOHLGOLQJ

Carry out the standard setting.

Turn the idle speed adjusting screw /$

clockwise until the engine runs smoothly.

Your carburetor does not have a high

speed adjusting screw (H screw). Adjust-

ment of maximum engine speed is not

necessary.

The carburetor is set at the factory to

guarantee an optimum fuel-air mixture

under all operating conditions.

Idling and part-load emissions are mini-

mized by limiting the idle mixture.

•

Check the air filter and clean it if

necessary.

•

Warm up the engine.

•

Carefully screw the low speed

screw / down onto its seat. Then

open it one turn counterclockwise

(standard setting, / )

$GMXVWLQJLGOHVSHHG

(QJLQHVWRSVZKLOHLGOLQJ

Check standard setting.

(L screw must be one turn open)

Turn the idle speed screw /$ clock-

wise until the engine runs smoothly.

If the engine is down on power, check

the spark arresting screen in the muffler.

•

Remove the housing

Take out the screw.

Take out the spark arresting

screen .

•

Clean the spark arresting screen.

•

If screen is damaged or heavily

carbonized, fit a new one.

•

Install the spark arresting screen.

•

Mount the housing.

326BA018 L

&DUEXUHWRUZLWKRQH

DGMXVWLQJVFUHZ

326BA031 KN

6SDUN$UUHVWLQJ6FUHHQ

LQ0XIIOHU

326BA024 KN

326BA025 KN

%* 

&KHFNLQJWKH6SDUN3OXJ

Wrong fuel mix (too much engine oil in

the gasoline), a dirty air filter and

unfavorable running conditions (mostly

at part throttle etc.) affect the condition of

the spark plug. These factors cause

deposits to form on the insulator nose

which may result in trouble in operation.

If engine is down on power, difficult to

start or runs poorly at idling speed,

first check the spark plug.

•

Remove spark plug -

see chapter “Starting”:

•

Clean dirty spark plug.

•

Check electrode gap -

it should be 0.5mm/0.02" $ -

readjust if necessary.

•

Use only resistor type spark plugs

of the approved range.

Rectify problems which have caused

fouling of spark plug:

Incorrect carburetor setting, too much oil

in fuel mix, dirty air filter,

unfavorable running conditions, e.g.

operating at part load.

•

Fit a new spark plug after

approx. 100 operating hours -

or earlier if the electrodes are

badly eroded.

:DUQLQJ

To reduce the risk of fire and burn injury,

use only spark plugs authorized by

STIHL (see “Specifications”). Always

press spark plug boot  snugly onto

spark plug terminal  of the proper

size. (Note: If terminal has detachable

SAE adapter nut, it must be attached.)

A loose connection between spark plug

terminal and ignition wire connector in

the boot may create arcing that could

ignite combustible fumes and cause a

fire.

000BA036 TR

000BA039 KN

 %*

•

Slacken off the housing screws.

Remove the three screws .

Lift the starter cover  off

the engine 

(if vac attachment is fitted, remove

handle before starter cover)

Take out the screw .

•

Remove the rope rotor very

carefully - the rewind spring is

seated in the rope rotor

and may pop out, uncoil and

cause injury if care is not taken.

Release spring tension by pulling

starter handle out serval inches.

Hold pulley to prevent rebound.

Pull rope. Slowly release spring

tension by allowing pulley to unwind

until all tension is gone.

•

Use a screwdriver to ease the cap

out of the starter grip.

•

Remove remaining rope from the

rotor and grip, making sure the

ElastoStart sleeve is not pushed

out of the grip.

•

Tie a simple overhand knot in the

end of the new starter rope and

then thread rope through the top of

the grip and the rope bush .

•

Refit the cap in the grip.

5HSODFLQJWKH6WDUWHU5RSH

DQG5HZLQG6SULQJ

326BA029 KN

326BA026 KN

326BA027 KN

%* 

Page is loading ...

STIHL BG 75 Owner's manual

Brand: STIHL

Model: BG 75

Category: Air blowers/dryers

Type: Owner's manual

This manual is also suitable for

BG75

Download PDF

report

STIHL BG 75 Owner's manual

This manual is also suitable for

STIHL BG 75 Owner's manual

Related papers

Other documents